1/* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18/* 19------------------------------------------------------------------------------ 20 PacketVideo Corp. 21 MP3 Decoder Library 22 23 Pathname: ./cpp/include/pv_mp3dec_fxd_op_msc_evc.h 24 25 Date: 08/20/2007 26 27------------------------------------------------------------------------------ 28 REVISION HISTORY 29 30 Description: 31------------------------------------------------------------------------------ 32 INCLUDE DESCRIPTION 33 34 This file select the associated fixed point functions with the OS/ARCH. 35 36 37------------------------------------------------------------------------------ 38*/ 39 40#ifndef PV_MP3DEC_FXD_OP_MSC_EVC_H 41#define PV_MP3DEC_FXD_OP_MSC_EVC_H 42 43 44#ifdef __cplusplus 45extern "C" 46{ 47#endif 48 49#include "pvmp3_audio_type_defs.h" 50 51 52#if (defined(PV_ARM_MSC_EVC_V5)||defined(PV_ARM_MSC_EVC_V4)) 53#include "armintr.h" 54#include "cmnintrin.h" 55 56 57 __inline int32 fxp_mul32_Q30(const int32 a, const int32 b) 58 { 59 return (int32)(((int64)(a) * b) >> 30); 60 } 61 62 63 __inline int32 fxp_mac32_Q30(const int32 a, const int32 b, int32 L_add) 64 { 65 return (L_add + (int32)(((int64)(a) * b) >> 30)); 66 } 67 68 69#define Qfmt_31(a) (int32)(a*0x7FFFFFFF + (a>=0?0.5F:-0.5F)) 70 71#define Qfmt15(x) (Int16)(x*((int32)1<<15) + (x>=0?0.5F:-0.5F)) 72 73#define fxp_mul32_Q32( a, b) _MulHigh( b, a) 74 75 76 77 __inline int32 fxp_mul32_Q28(const int32 a, const int32 b) 78 { 79 return (int32)(((int64)(a) * b) >> 28); 80 } 81 82 83 __inline int32 fxp_mul32_Q27(const int32 a, const int32 b) 84 { 85 return (int32)(((int64)(a) * b) >> 27); 86 } 87 88 89 90 __inline int32 fxp_mul32_Q26(const int32 a, const int32 b) 91 { 92 return (int32)(((int64)(a) * b) >> 26); 93 } 94 95 96 __inline int32 fxp_mac32_Q32(int32 L_add, const int32 a, const int32 b) 97 { 98 return (L_add + _MulHigh(b, a)); 99 } 100 101 102 __inline int32 fxp_msb32_Q32(int32 L_sub, const int32 a, const int32 b) 103 { 104 return (L_sub - _MulHigh(b, a)); 105 } 106 107 108 109 __inline int32 fxp_mul32_Q29(const int32 a, const int32 b) 110 { 111 return (int32)(((int64)(a) * b) >> 29); 112 } 113 114 115 116 __inline int32 pv_abs(int32 a) 117 { 118 int32 b = (a < 0) ? -a : a; 119 return b; 120 } 121 122 123 124#endif 125 126#ifdef __cplusplus 127} 128#endif 129 130 131#endif /* PV_MP3DEC_FXD_OP_MSC_EVC_H */ 132 133